Title :
Effective-medium properties of a free-space transmission-line metamaterial superlens
Author :
Iyer, Ashwin K. ; Eleftheriades, George V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON
Abstract :
This work discusses the validity of the effective-medium interpretation of the multilayer negative-refractive-index transmission-line (NRI-TL) metamaterial superlens using supporting simulation and experimental data. The uniqueness of its extracted effective permittivity and permeability is verified through a comparison of simulation data for lenses of different thicknesses, and simulations of negative refraction for various angles of incidence illustrate that an effective-medium perspective is justified. Experimental results for subdiffraction imaging are corroborated by the theory governing the relationship between loss, resolution, and bandwidth.
Keywords :
lenses; metamaterials; multilayers; refractive index; transmission lines; effective-medium properties; free-space metamaterial superlens; multilayer; negative refraction; negative-refractive-index metamaterial superlens; permeability; permittivity; subdiffraction imaging; transmission-line metamaterial superlens; Data mining; Frequency; Lenses; Metamaterials; Nonhomogeneous media; Permeability; Permittivity; Slabs; Solids; Transmission lines;
Conference_Titel :
Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting, 2009. ANTEM/URSI 2009. 13th International Symposium on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-2979-0
Electronic_ISBN :
978-1-4244-2980-6
DOI :
10.1109/ANTEMURSI.2009.4805073
